To use a Theragun on your back, turn the device on before placing it against your skin, then float it slowly across the muscle without pressing hard. Let the percussive force do the work. Spend about 30 seconds to 2 minutes per muscle group, staying on the fleshy tissue on either side of your spine rather than on the spine itself. The key mistake most people make is pushing too hard or staying in one spot too long, both of which can leave you more sore than when you started.
Where to Target (and Where to Avoid)
Your back has several distinct muscle groups, and each one benefits from a slightly different approach. The upper back holds the trapezius muscles, which run from the base of your skull down to the middle of your back and out toward your shoulders. These are the muscles that tighten up from desk work and forward-head posture. Below them sit the rhomboids, the muscles between your shoulder blades that pull them together. The lower back contains the erector spinae, two thick columns of muscle running parallel to your spine.
The critical rule: stay off the spine itself. The Theragun should only contact soft, muscular tissue. Avoid bony prominences, including the vertebrae and the ridges of your shoulder blades. Keep the device away from your kidneys, which sit in the soft area of your lower back just below your ribs on either side. And do not use it on your neck, where the rapid percussion could potentially injure blood vessels.
Choosing the Right Attachment
The attachment you snap onto the Theragun changes what the treatment feels like and how deep it reaches. For general back work across large muscle groups like the upper traps and the broad muscles along your spine, the standard ball attachment works well. It distributes force across a wider area and feels comfortable on most people.
For more targeted work:
- Dampener: A softer, cushioned head designed for tender or bony areas. If your back is particularly sore or you’re working near the shoulder blades, this is a forgiving choice.
- Wedge: Shaped like a flat blade, this attachment is designed for the shoulder blade area. It mimics a scraping or flushing motion that helps move fluid through the tissue. Good for tightness between the shoulder blades.
- Thumb: Mimics the pressure of an actual thumb pressing into a knot. This is the go-to for trigger points and deep tension in the lower back.
- Cone: A pointed tip for pinpoint work on small, specific knots. Useful when you can identify a single tight spot, but too intense for sweeping across large areas.
If you’re new to percussive therapy, start with the dampener or ball. You can always switch to a more focused attachment once you know how your muscles respond.
Technique for the Upper Back and Traps
Start on a low speed setting. Place the Theragun on the meaty top of your trapezius, the area between your neck and your shoulder. Move the device slowly along the muscle, gliding at roughly an inch per second. You’re not scrubbing back and forth. Think of it as a slow, deliberate pass across the tissue. When you hit a spot that feels particularly tight or tender, you can pause for 10 to 15 seconds before continuing.
For the area between your shoulder blades, angle the Theragun so it contacts the muscles just inside the shoulder blade’s edge, not the bone itself. The wedge attachment works especially well here. Sweep vertically along the inner border of each shoulder blade, spending about 30 to 60 seconds per side.
Technique for the Lower Back
The lower back requires more caution because the muscle layer is thinner and the spine is more exposed. Use a softer attachment like the dampener and keep the speed on the lowest or second-lowest setting. Target the two thick muscle columns that run parallel to your spine, roughly two to three inches out from the center of your back. Float the device up and down along these columns without crossing over the spine.
Reaching your own lower back can be awkward. Some people lie on the floor with the Theragun positioned under them, letting gravity provide the pressure. Others hold the device with the arm attachment or use a longer-handled model. If you’re straining to reach at an odd angle, you lose control of the pressure, which increases the chance of hitting the spine or pressing too hard. Find a position where you can guide the device comfortably.
How Long to Spend on Each Area
Timing depends on your goal. For a pre-workout warmup, sweep across each muscle group for about 30 seconds. This increases blood flow and primes the tissue for movement. For post-workout recovery, spend 1 to 2 minutes on each area you trained. The longer duration helps reduce soreness and speeds the clearing of metabolic waste from the muscle.
A full back session might look like this: 60 seconds on each upper trap, 60 seconds between each shoulder blade, and 60 to 90 seconds on each side of the lower back. That puts a complete session at roughly 5 to 7 minutes. You can repeat this daily, but if any area feels bruised or more sore after a session, back off for a day or two and use less pressure next time.
Pressure and Speed Settings
One of the most common mistakes is grinding the Theragun into a tight spot as hard as possible. The device generates its own force through percussive action. You only need to rest it against the skin with light to moderate pressure, roughly the weight of the device itself. Adding more force doesn’t improve the treatment. It just compresses the tissue so much that the percussion can’t do its job, and you’re more likely to bruise.
Start on the lowest speed setting for your first few sessions, especially on the lower back. You can increase the speed as your muscles adapt. Higher speeds work well on larger, thicker muscle groups like the upper traps. Lower speeds are better for areas where the tissue is thinner or more sensitive.
When to Be Cautious
If you have a herniated or bulging disc, approach percussive therapy carefully. Improper technique or excessive pressure near the affected area can increase pain or aggravate the condition. Temporary discomfort, light bruising, and fatigue are common side effects even in healthy tissue, but people with disc issues should start gently and stop if symptoms worsen.
Avoid using the Theragun over broken skin, recent injuries, areas with surgical hardware like screws or plates, or anywhere you feel a pins-and-needles sensation during treatment. That tingling indicates the device is contacting nerve tissue, which is a signal to move to a different spot immediately. If you have a diagnosed spinal condition or active inflammation, getting guidance from a physical therapist on which areas are safe to treat is worthwhile before you start regular sessions.